Xc220009 wrote:1. How do i get them all into the nest for hibernation?

They will do that on their own. When the time is right they will just all hug together.

Xc220009 wrote:2. Will the larvae be ok in hibernation?

Yes. Only Formica species hibernate without larvae.

Xc220009 wrote:3. When should i put them in and out and at what tempurature?

Antstore says from October to March at 5-8°C. I'd wait until they're all huddled together and them put them into the cold. Just make sure you don't shockfreeze them, give them some time to adapt by repeatedly exposing them to cold temperatures for short periods (like keeping them next to an open window).When they hibernate make sure the nest doesn't dry out, Myrmica needs it rather moist.